Descripción
A flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of `nameConstraints` labels, specifically for `dNSName` (DNS) or `rfc822Name` (email) constraints within `excludedSubtrees` or `permittedSubtrees`. A remote attacker can exploit this by crafting a leaf certificate with casing differences in the Subject Alternative Name (SAN), leading to a policy bypass where a certificate that should be rejected is instead accepted. This could result in unauthorized access or information disclosure.
CVSS 6.5EPSS 0.565%Riesgo 0.68
Ver fuente- Publicación
- 2026-04-30 18:16:30
- Versiones afectadas
- unknown
- Tipo
- Package
- Última modificación
- 2026-07-22 16:17:18
- Vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Sistemas operativos
- Linux